Means for imparting oscillatory movement.



E. H. BRIDENBAUGH.

MEANS FOR IMPARTING OSCILLATORY MOVEMENT.

APPLICATION FILED MAY 18, 19H}.

Patented Apr. 17, 1917.

nnrrnn snares rarnn r onrao ELMER H. BRIDENIBAUGH, OF DENVER, COLORADO, ASSIGNOR TO HENRY O. JACKSON,

, OF DENVER, COLORADO.

MEANS FOR IMFARTING OSOILLATORY MOVEMENT.

Specification of Letters Patent.

Patented Apr. 17, 1217.

Application filed May 18, 1916. Serial No. 98,318.

To all whom it may concern:

Be it known that 1, Emma H. BRIDEN- BAUGH, a citizen of the United States, residing in the city and county of Denver and State of Colorado, have invented certain new and useful Improvements in Means for Imparting Oscillatory Movement; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

My invention relates to improvements in means for imparting oscillatory movement and is adapted for use in a great many different relations. One of the uses which I contemplate is the operation of an oscillatory piston adapted for use in a blower, pump or engine, the piston being centrally pivoted and extending in opposite directions therefrom, its members on opposite sides of the pivot being arranged to move in chamber compartments. It must be understood, however, that the invention is not limited to the imparting of oscillatory movement to an element of any specific machine.

My obj eot is to provide mechanism of this class which shall be comparatively simple in construction and exceedingly efficient for the purpose intended.

Having briefly outlined my improvement, I will proceed to describe the same in detail, reference being made to the accompanying drawing, in which is illustrated an embodiment thereof. In this drawing,

Figure 1 is a view showing my improvement in side elevation, the shaft, however, upon which the member to be oscillated is mounted, being shown in cross section, taken on the line 11, Fig. 2.

Fig. 2 is a view taken at right angles to Fig. 1, and by viewing the latter in the direction indicated by the arrow in Fig. 1, but shown in connection with a chamber largely broken away, in which it is assumed the element to be oscillated is mounted.

The same reference characters indicate the same parts in both views.

Let the numeral 5 designate a crank arm which is keyed as shown at 6 to the exposed extremity of a shaft 3 upon which is mounted an oscillatory member 1 which is shown in two positions indicated by dotted and broken lines respectively, the dot ted position corresponding with the full line position of the crank 5 in Fig. 1 and indicating the position of the oscillatory member or piston when at the limit of its stroke in one direction, while the broken line position of the oscillatory member or piston indicates the position of the said member when at the opposite limit of its stroke. This crank arm 5 is connected by means of a wrist pin 7 with the center of a fioating equalizing bar 8 whose opposite extremities are connected by means of wrist pins 9 and 10 with two links 11 and 12, the opposite extremities of these links being connected by means of wrist pins 13 and 14: with cranks 15 and 16 respectively secured to two meshinggears 17 and 18. Power may be applied to either of these gears from a power shaft 19 upon which is secured a gear or pinion 40, which, as shown in the drawing, meshes with the gear 18.

If it be assumed that the mechanism is in the position shown in Fig. 1 and the operating pinion 4.0 is rotated in the direction of the arrow adjacent said pinion, the two gears 17 and 18 will be rotated in the directions indicated by the arrows adjacent said gears, and if it be assumed that the piston or oscillatory member 1 is in the po sition shown by dotted lines at the beginning of the operation, the axes of the two wrist pins 9 and 10 will move in the dotted arcs 20 and 21 until the equalizing bar 8 is in the position indicated by the broken line 22. During this same time the axes of the two wrist pins 18 and 14 will have traversed paths indicated by the dotted arcs 23 and 24 respectively, and the longitudinal centers of the two links 11 and 12 will be in the positions respectively indicated by the broken lines 25 and 26. At the same time the axis of the wrist pin 7 which connects the crank 5 with the equalizing bar, will have traversed a dotted are 31 and the piston 4: will have made one complete stroke during which it may be said to have moved on the position shown by dotted lines in Fig. 1 to the position shown by broken lines in the same figure. Then, as the rotation of the two gears 17 and 18 continues in the same oirection, the parts of the actuating mechanism just referred to, will begin to traverse the aforesaid dotted arc in the reverse direction, and by the time the operating devices have again reached the full line 5 positions in Fig. 1, the oscillating piston will have made its reverse stroke or moved from the broken line position in Fig. 1, to the dotted line position in this same figure; and this operation is repeated as the motion of the operating mechanism continues.

From the foregoing description the use and operation of my improvement will be readily understood. As the two meshing gears 17 and 18 are rotated in the direction indicated by the arrows in Fig. 1, the crank arm 5 will be moved toward the left from the full line position, whereby its axis is caused to traverse the dotted are 31, and by the time the center of the wrist pin has reached the small circle 32, the longitudinal center of the equalizing bar will be coincident with the position indicated by the dotted line 22. At the same time the links 11 and 12 will be in the positions indicated by the broken lines and 26. Then, as the rotation of the gears is continued, the crank arm 5 and the other parts of the mechanism will be returned to the full line position in Fig. 1 and the piston or oscillatorymembe'rt line position toward the left to the full line position (see Fig. 1) and thence back to the dotted line position, in which event the oscillatory member has made-two complete strokes.

In Fig. 2 it is assumed that the part 33 is a cylinder in which the oscillatory member 1% is operably mounted and that the conduit 3tis in communication with the structure, whereby air or other fluid may be available upon which the oscillatory piston may act.

Having thus described my invention, what I claim is,-

1. In an apparatus of the class described, the combination with a pivoted member, of means for oscillating the same including a crank arm operably secured thereto, an equalizing bar to the center of which the outer end of the crank arm is pivoted, links having one extremity pivotally connected respectively with the opposite extremities of the equalizing bar, gears carrying cranks with which the opposite ends of the said links are respectively connected, and means for rotating the gears.

2. The combination with a pivoted member. of means for oscillating the same including a crank arm operably secured thereto, an equalizing bar to the center of which the outer end of the said crank arm is pivoted,.two links of equal length having one extremity of each pivotally connected with the opposite ends of the equalizing i bar, gears carrying cranks with which the will have been moved first from the dotted with a movably mounted member, of means for oscillating the same including a crank arm operably secured thereto, an equalizing bar to the center of which the outer end of the crank arm is pivoted, two links ofequal length having one extremity pivotally connected respectively with the opposite ends of the equalizing bar at equal distances from the center, meshing gears carrying cranks with which the opposite ends of the said links are respectively connected, and means for rotating the gears.

41-. The combination 'with a movably mounted member, of means for oscillating the same including a crank arm operably connectedtherewith, an equalizing bar to the center of which the outer end of the crank arm is pivoted, two links of equal length having one extremity pivotally con nected respectively with the opposite ends of the equalizing bar, meshing gears of equal size carrying cranks with which the opposite ends of the said links are respectively connected, and means for rotating the 7 gears.

5. The combination with a movably mounted member, of means for oscillating the same including a crank arm operably connected therewith, an equalizing bar to the center of which the outer end of the crank arm is pivoted, two links of equal length having one extremity pivotally connected respectively with the opposite ends of the equalizing bar at equal distances from the center, meshing gearsof equal size carrying cranks of equal lengthwith which the opposite ends of the said links are respectively connected, and means for rotating the gears.

6. The combination with a movably mounted member, of means for oscillating the same including a crank arm operably connected therewith, an equalizing bar to the center of which the outer end of the crank arm is pivoted, links having one extremity pivotally connected respectively with'the opposite ends of the equalizing bar, wheels of equal size operably connected to rotate in unison and respectively equipped with cranks with which the opposite, ends of the said links are respectively connected, and means for actuating the said wheels.

7. The combination with a member movably mounted, of means for oscillating the same including a crank arm operably secured thereto, an equalizing bar to the center of which the outer end of the crank arm is pivoted, two links of equal length having one extremity pivotally "connected respectively with the opposite ends of the'equalizing bar at equal distances from the center, Wheels of equal size operably connected to rotate in unison, said Wheels being respectively equipped with cranks With which the opposite ends of the said links are respectively connected, and means for rotating the said Wheels.

8. The combination With a member movably mounted, of means for oscillating the same including a crank arm operably secured thereto, an equalizing bar to the center of Which the outer end of the crank arm is pivoted, two links of equal length having one extremity pivotally connected respectively With the opposite ends of the equalizing bar at equal distances from the center, Wheels of equal size operably connected to rotate in unison and respectively carrying cranks of equal length With which the opposite ends of the said links are respectively connected, and means for rotating the said Wheels.

In testimony whereof I afiix my signature in presence of two Witnesses.

ELMER H. BRIDENBAUGH.

Witnesses GRACE HUsToN, A. EBERT OBRIEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

